James SUpdate 2/22/2008: The same bug is still around!
Someone on August 10 mentioned that they were having problems with the Epson Scanner software on their G5. I had this issue as well; however, I removed the Epson Scanner Monitor startup item from my login profile.
This is used to allow the user to press the hotkey buttons on the Epson scanner; however, it's not necessary to use the scanner. Anytime I want to do a scan, I either open up the Epson scan software (which should be possible through Photoshop as well) manually then do my scanning. No more monitoring software eating up CPU cycles.
Sunday, August 14, 2005
Epson scanner workarounds for Tiger: Disable Epson Scanner Monitor
Macintouch: OS X 10.4.2 (Part 29)